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Generac has not released Evolution error code lists to the dealers yet. Error code 2400 seems to be a popular error, and it causes the generator to lock out. This error code is caused when the T1 circuit is wired to the controller and energized before the battery is connected. This causes the controller to think there is a problem with the battery, in reality, the battery is not there.To clear this code, do the following:1. Place the generator into "OFF"2. Remove the 7.5A fuse from the controller3. Remove fuses N1 / N2 / T1 from the transfer switch.4. Remove the battery.Wait 15 minutes.5. Reconnect the battery6. Replace fuses N1 / N2 / T1 into the holders in the transfer switch7. Replace the 7.5A fuse into the Evolution controller.DO NOT ENERGIZE THE T1 CIRCUIT UNTIL THE BATTERY IS CONNECTED TO THE GENERATOR
Before doing all the above, simply check that the battery terminals are tight